Bookbinding



April 9, 1940. A. D. DOUGLAS 2,196,336

- BOOKBINDING Filed March 27, 1939 INVENT OR.

I 2 I 6 /1960 ,3. oag/as f i.ii" 2 BY 4 I 4 I O" 3 Q ATTORNEY.

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Patented Apr. 9, 1940 UNITED STATES PATENT OFFICE 2,196,336 BOOKBINDING Mich., a. copartnership Application March 27, 1939, Serial No. 264,309

1 Claim.

This invention relates to loose leaf bindings and has for its object to attach the leaves to a cover of a book by means of a continuous wire loop device in such manner that the portion of the cover overlying the edges of the leaves, and known in the bindery field as the "backbone, may have indicia printed or embossed thereon for advertising or identifying purposes.

In loose leaf bindings employing a continuous wire loop device for securing the leaves of the book to the cover, the wire loops extend through apertures in the leaves and in the cover. The cover quite commonly comprises two separate sheets, with no connection other than that formed by the wire loop device, or in other words, no backbone. In other cases, a backbone is provided which is apertured for the wire loop device, or which is obstructed by the wire loop device, with the the result that in all cases it is impossible or impractical to place identifying or advertising indicia on the edge of the book.

The main object of this invention, difierently stated, is to teach the use of a wire loop leaf connecting device in a cover having a backbone suitable for bearing advertising or identifying indicia.

Another object is to provide a loose leaf bind ing comprising a cover and loose leaves attached together by a continuous wire loop device which extends through apertures in the leaves and apertures in one of the flaps of the cover. Disposition of the cover apertures in one of the flaps, preferably the rear flap, disposes the exposed portions of the wire loop device where it permits printing of indicia on the backbone portion of the cover.

Another object is to provide a loose leaf binding having a cover composed of front and rear flaps united by a backbone portion and a con- 40 tinuous wire loop device connecting the leaves to the rear flap of the cover. This arrangement permits the cover to open to a position where it lies fiat on a support by hinging movement of the front flap relative to the backbone, and hinging movement of the backbone relative to the rear flap. In other words, both the front flap and the backbone may be moved to a plane containing the rear flap, thus enabling easy manipulation of the leaves which are bound to the cover. I

Another object is to teach a method of forming a book embodying the characteristics above mentioned.

Other objects and advantages will become more fully apparent as reference is made to the accompanying drawing, wherein my invention is illustrated, and in which Fig. l is a bottom plan oi. the book,

Fig. 2 is an end elevation,

Fig. 3 is a bottom plan with the bottom flap 5 moved to a position exposing the wire loop device,

Fig. 4 is an elevation,

Fig. 5 is a transverse section,

Fig. 6 is a top plan view of the blank, and

Fig. 7 is an exploded view illustrating the relal0 tive positions of the several parts at the time 01' assembly.

The cover of the present book is formed of a blank such as shown in Fig. 6, which comprises a sheet having two parallel fold lines 9 and 2 l5 dividing it into a front flap 3, a backbone t, and a rear flap 5. A third fold line t, parallel to the fold lines 8 and 2, is provided for purposes of assembly, and equally spaced on opposite sides of the fold'line 6 are apertures 27 and d.

Prior to assembly, the cover is folded backwardly upon itself along the fold line 6, and assumes the position shown in Fig. 5 wherein the apertures l and 8 coincide. A plurality of loose leaves 9 having apertures it therein are placed as in juxtaposed relation with the cover, and with their apertures it coinciding with each other and with the apertures l and 8. A continuous wire loop device it having its loop forming portions in the open position shown in Fig. 7 is then inac serted through the apertures l, it and it and compressed to close or substantially close the loop forming portions thereof. The cover is then folded to the position shown in Figs. 42 and 5.

Fig. 1 illustrates the location of the exposed. as portions of the wire loop device, and it is to be noted that said exposed portions are coed entirely to the rear flap 5, thus leaving the backbone i unobstructed and uninterrupted. Accordingly, the backbone may be provided with printed 40 or embossed advertising or identifying indicia.

The wire loop device i i is formed from a single wire bentto form loops,'each loop being composed of a double run of wire, and the adjacent loops being connected by portions i2 extending 45 parallel to the fold lines. By disposing the e loop connecting portions between the leaves and the rear flap 5 the cover may be opened to a fiap position where the flap 3, the {backbone 3 and the rear fiap 5 are substantially contained in a to single plane. This function becomes apparent upon inspection of Figs. 4 and 5.

The terminals it of the wire loops it extend into close proximity with the connecting portions W as may be seen upon inspection of a from and parallel to said hinge lines for accommodating wire loop leaf holding means, said rows of apertures having a fold line therebetween whereby the leaf holding means may be threaded simultaneously through both rows of apertures and through apertures in leaves to be held thereby, said leaves being thereby retained in place by one of said panels with the exterior of said back being available in its entirety for in'dicia.

ALFRED D. DOUGLAS. 

